:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: rgba(30, 41, 59, 0.7);
  --border-color: #334155;
  --border-subtle: #1e293b;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;

  --accent-primary: #3b82f6;
  --accent-primary-hover: #2563eb;
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  --accent-info: #06b6d4;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, Menlo, Consolas, "Ubuntu Mono", monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
.navbar {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.85rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  font-size: 1.4rem;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-subtle);
  background: var(--bg-primary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 4px 10px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-success);
}

.dot.disconnected {
  background-color: var(--accent-danger);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  background: var(--bg-tertiary);
  color: var(--text-main);
  text-decoration: none;
}

.btn:hover {
  background: #475569;
}

.btn-primary {
  background: var(--accent-primary);
  color: #fff;
  border-color: var(--accent-primary);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
}

.btn-sm {
  padding: 0.25rem 0.55rem;
  font-size: 0.75rem;
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.3);
}

/* Layout */
.container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 1.5rem;
  width: 100%;
}

/* Stats Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-main);
}

.stat-card.active-workers .stat-value { color: #60a5fa; }
.stat-card.running-tasks .stat-value { color: #38bdf8; }
.stat-card.pending-tasks .stat-value { color: #fbbf24; }
.stat-card.completed-tasks .stat-value { color: #34d399; }
.stat-card.failed-tasks .stat-value { color: #f87171; }

/* Grid Sections */
.main-grid {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 1.5rem;
}

@media (max-width: 960px) {
  .main-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.card-header {
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
}

.card-body {
  padding: 1rem 1.25rem;
}

/* Worker List */
.worker-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.worker-item {
  background: rgba(15, 23, 42, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.worker-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.worker-id {
  font-weight: 600;
  font-size: 0.88rem;
}

.worker-status {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  text-transform: uppercase;
}

.worker-status.active {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
}

.worker-status.offline {
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
}

.worker-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.plugin-tag {
  display: inline-block;
  background: var(--bg-tertiary);
  color: var(--text-muted);
  font-size: 0.7rem;
  padding: 2px 6px;
  border-radius: 4px;
  margin-right: 4px;
  margin-top: 4px;
}

/* Tasks Filter Tabs */
.tabs {
  display: flex;
  gap: 0.5rem;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
}

.tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-tertiary);
}

.tab-btn.active {
  background: var(--accent-primary);
  color: #fff;
  font-weight: 600;
}

/* Table */
.table-container {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background: rgba(15, 23, 42, 0.4);
  padding: 0.65rem 0.85rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid rgba(51, 65, 85, 0.4);
  font-size: 0.82rem;
  vertical-align: middle;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.task-id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge-pending { background: rgba(251, 191, 36, 0.15); color: #fbbf24; }
.badge-running { background: rgba(56, 189, 248, 0.15); color: #38bdf8; }
.badge-completed { background: rgba(52, 211, 153, 0.15); color: #34d399; }
.badge-failed { background: rgba(248, 113, 113, 0.15); color: #f87171; }
.badge-cancelled { background: rgba(148, 163, 184, 0.15); color: #94a3b8; }

/* Progress Bar */
.progress-box {
  width: 140px;
}

.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: var(--bg-tertiary);
  border-radius: 3px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--accent-primary);
  transition: width 0.2s ease;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 3px;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 200;
  padding: 1.5rem;
}

.modal-backdrop.open {
  display: flex;
}

.modal-window {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 750px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

.modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 0.85rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

/* Terminal Log Window */
.terminal-window {
  background: #020617;
  border: 1px solid #1e293b;
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #e2e8f0;
  max-height: 380px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* Form inputs */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.form-control {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  padding: 0.5rem 0.75rem;
  font-family: inherit;
  font-size: 0.85rem;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
}

textarea.form-control {
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  z-index: 300;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-main);
  font-size: 0.82rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  animation: slideIn 0.2s ease;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}